Powertop 自动调谐错误 - 无法从文件加载

Question

我正在尝试在 powertop 中执行 --auto-tune，但是出现以下错误

无法从文件 /var/cache/powertop/saved_pa​​rameters.powertop 加载

如果我浏览到该目录，该文件确实存在。

我首先运行 --calibrate ，完成得很好。

这是完整的打印输出；

~ $ sudo powertop --auto-tune
modprobe cpufreq_stats failedLoaded 48 prior measurements
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only 
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
Devfreq not enabled
glob returned GLOB_ABORTED
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only 
To show power estimates do 333 measurement(s) connected to battery only
Leaving PowerTOP

Answer 1

这是正常的。你看解释File will be loaded after taking minimum number of measurement(s) with battery only。

此警告将在一段时间后消失。